Mold for molding stopples.



Patented June 1, 1909. 2 SHEBTS-SHEET 1.

a z a d 4P1? W. F. SOHAGHT. MOLD FOR. MOLDING STOPPLBS.

'W. F. SGHACHT. MOLD FOR MOLDING STOPPL-ES. APPLICATION FILED NOV. 6, 190a.

Patented June 1,1909.

2 SHEETS-SHEET 2.

WILLIAM F. SGHACHT, OF GOS HEN, INDIANA.

Mom) FonMoLm'NG STOPPLES.

Specification of Letters Patent.

Patented June 1, 1909.

Application fiied November 6, 1908. serial No. 161,5108.

Tocll whom it may concern:

Be it known that I, WILLIAM F. SoHAcHT,

of Goshen,'in' the county* of Elkhart and.

S tateof Indiana, have invented certain new and useful Improvementsin Molds for Molding Stopples; and I hereby declare that the following is a full, clear, and exact descriptlonthereof, reference being bad to the. ac- Y companyingdrawings, which form part of this specification.

This invention relates to rnolds for molding stopples for sinks, vbath tubs, and the like, out of rubber or like plastic material- -Such stopples being of the c aracter shown in my Patent No. 901,195, dated October 13, 1908, and are each rovided with an integral globular shaped. nob on its upper side.

-The object of this invention is to enable such stopples to be accii'rately formed at one operation in the mold, and to be readily re- 'moved from the moldafter they are vulcanized and the present inventionconsists in the novel construction of the molds as illustrated in the accompanying drawings and hereinafter described and claimed.

In the drawingsFigure 1 is a central vertical sectional view of a mold for making sink stopples. Fig. 2\is a similar view of part of a mold for basin stopples .con-

structed in accordance with the invention and by which a plurality of such stopples Y may he simultaneousl' produced. Fig. 3 is a sectional view of a ath-tub-stopplel-mold constructedfin accordance with the inven tron. Fig. 4 is a detail erspectiveview of one of the removable mo d parts a. Fig. 5 is 'plan view'of the lower artof a stop,ple

.7 atop mol showing the removable parts-a, afin lan. Fig. is adetail transverse section on me 7 7, Flg. 5. Fig. 7 is aside view of a basin stopple produced by the molds shown in Fig. 2. 'Fig. 8 is 'a side view of .asink- 'stopple produced by the molds sliownin Figs. 1 and 2, and having a metal ring at;

tached to the knob; Fig. dis a sectional view, and FigJO a plan View of a bath-tubstopple produced by the mold shown in.

1 -Fi s. 3 and 11. Fig. 11 is ase'ction'al view of a s 'ght modification of the mold for forming bath-tub-stopples.

The basil? and sink stopples as shown in o my said patent and as shown in- Figs. 7 and 8 comprise acircular disk like body portion.

- 1, having a central integral knob 2 connected with ,the body portion 1' by an integral stem2f. j

figures. I

To facilitate removal of the parts a, holes.

Each,mold as shown has a lower flask portion A and an upper cope portion B.

The opposed faces of the parts A and B are recessed as at a and I) to ether forming a cavity corresponding exactly to the form of the bod of the stopple to be produced in such mo (1.

In the center of therecess a is a circular cavity a in which are placed two opposite .slmilar removable parts a, a, whlch are sem1- clrcular and recessed in their ad acent faces as at a so that-when the'parts a are fitted together in the cavity a? the exposed recesses in said arts'and in the cavity together correspond incontour' to the exposed knob and stem of the stopple.

As shown in Fig. 2 the parts a contain the entire recess for the knob; but preferably instead of the parts'a 'containing the entire recess the bottom of the cavity a? canbe centrally concaved as shown at e (Figs. 1, 2, 3, 6 and ljl) to shape the upper half of the top of the knob, and the removable parts a,

can be shaped to form the underside of the knob and .the neck, as indicated in said at can be n'radein the part. A as indicated in Figs. 1, 2 and 3of the drawings. .The parts A and B maybe properly;

relatively to each other y means of pins a o onemember engaging corresponding holes b in the other; or-by other suitable means.

Fig. 8 shows a sink stopple which can be produced by the mold shown in Fi s. 1, 2,15 and 6. The metal ring indicate in this figure however being inserted in the neck of the'knob after the stopple has been molded.

The basin stopple shown 'in Fig. 7 has a semiglobular protuberance on its under. side this may be formed by the mold shown in Fig. 2 the construction of this mold is siniilarto that for the sink stopple, except the cavity b in part B I is shaped to corspond-incontour to the underside ofthestoppie to be produced.

Obviously a plurality of stopples can be produced in one mold by providlng it with a plurality of uitable recesses; as indicated in ig. 2, whic shows a mold adapted to produce two basin stopples at each operation. In some cases the part A maybe made in sections thus in Fig as divided longitudinallythelow er part A a base upon which the part e cavity a in such case exthereof forminlg1 A rests and t centered or alined 3 the part A is shown tending entirely throng? the par-t'A Again in some cases the part may e made in two sections thus, as indicated in ig. .3, the part B is divided longitudinally the upper portion B? being practically imperforate while the cavities are all formed in the lower part B. This construction is particularly useful for making molds for roducing' the bathtub-stopples shown in igs. 9 and 10, which bath-tub-stpples instead of having the marginal portion 1 extending radially from the ody, as do the sink and basin stopples, has it bent downto form a depending flange l as indicated in the drawings. In order to form this flange it is necessary to form an annular channel in the part B of the mold and this may be more convenientl done by" constructing this part of the mold in two sections as indicated in Fig. 3, the lower sec-j tion B being provided with openings in which are centered dis-ks C attached to the ing of the cavities in the mold and proper" forming of the thicker portions of the stopple. Then the mold is closed and the carts A'and B forcibly com )ressed together. thereby compelling the ru her to fill every portion of the mold recess; this compression forces the canvas; indicated at 3- in the draw-' ing, downi'nto the knob portion of the stople in which it forms a tough flexible sti'll'enmg andreinforcipg connection between the knob and stopple proper. The mold is then fastened and subjected to sufficient heat to vulcanize the rubber. Any surplus rubber will be crowded over the edge ofthe mold recess into overflow spaces 4 which surround the mold recessesas indicated in the drawings, see *Figs. 1 to 3. After the vulcanizing is completed the mold can be open ed and the stop le readily removed. If the parts a shou d bind because of the close fit between them and the cavity a, ofthe mold, they can easily be knocked out by inserting a suitable tool through the holes a.

Having described my invention what I claim as new and desire to secure by Letters Patent thereon is:

1. A mold for rubber stopples having integral knobs, said mold comprising an upper and a lower portion with a concavity )6- tween corresponding to the form of the stopple body, a central cavity in one portion having its end shapedto form the outer half of the stopple knob, and removable recessed pieces located in said cavity the recesses in said pieces connecting with the recess in the mold portions and correspondingto the inner half of the knob and its stem, substantially as and for the purpose set forth.-

.2. The-herein described mold for stopples having knob-like handles, comprisingopposite portions, the upper portion being recessed on its meeting face to correspond in contour to the under side of the stopple to he formed, and the lower ineinbe'rbeing recessed in its meeting face to correspond in contourto the top side of tlze body of the stopple to be formed and having a central cavity, the bottom ofsaid cavity being recessed to shape the upper part of the knob-like handle of the stopple; with a pair of "removable parts re movably fitted in the upper part of said cavity and, recessed on their opposed faces to shape the stem and lower part of the knob of the stopple, substantially as described.

In testimony that I claim the foregoing as J my own, I afiix my signaturein presence of two witnesses.

WILLIAM F. seHAcirr.

Witnesseszi WM. H. CHARNLEY, IIENRX W. PEAsE- 

